Norwis

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General

• Origin & Breeding: bred by Frito-Lay Inc. from the cross (RD289-18 x Monona) in Rhinelander, Wisconsin (USA) in 1965. Tested and released as FL657.
• Year registered in Canada: 1994
• Registration number: 3971
• Maturity: mid-season to late

Botanical Features

• Plants: medium to large; spreading; thick stems, mostly green with very light pubescence; wings slightly to moderately prominent.
• Leaves: dark green, lightly pubescent.
  Terminal leaflets: ovate; tip cuspidate.
  Primary leaflets: four to five pairs; ovate, tip cuspidate, base asymmetrical.
  Secondary leaflets: few.
• Flowers: moderately numerous; white; green calyx slightly pubescent.
• Tubers: blocky to oval, slightly flattened; smooth buff skin; generally shallow eyes, medium-deep at apical end; pale yellow to cream flesh.
• Sprouts: ovoid, pink, slightly pubescent.

Agricultural Features

High yielding variety; widely adapted; slow development early in season; slightly susceptible to hollow heart and internal necrosis; good chip colour at harvest and after storage at 10°C or warmer; not well-suited to long term cold storage for chip processing; good storability; medium specific gravity.

REMARK: close spacing should be used to avoid oversize; difficult to kill vines under cool fall conditions.

• Utilization: excellent boiling, baking and chipping quality.
• Chief Market: chipping.

Reaction to Diseases

Highly resistant: PVX, PVY, leaf roll.
Moderately resistant: southern bacterial wilt.
Susceptible: verticillium wilt, pink eye, external brown spot in cold soils.
Highly susceptible: common scab.

References:   1, 6, 9.

Send your comments to cfia.potatosection-sectiondespommesdeterre.acia@inspection.gc.ca regarding potato variety descriptions.